MESON Chess Problem Database

Problem Display
PID: 44619 (1n3k1b/5BRq/3K2P1/4N3/3B2N1/8/8/8 w - - 0 1)

Knott, Hubert Edward

British Chess Bulletin, 1910

1n3k1b/5BRq/3K2P1/4N3/3B2N1/8/8/8

#2

7 + 4

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg7
      • 2.Sd7#
    • 1...Qxg6+
      • 2.Sxg6#
    • 1...Qg8
      • 2.Rxg8#
    • 1...Qh1
      • 2.Rg8#
    • 1...Qh2
      • 2.Rg8#
    • 1...Qh3
      • 2.Rg8#
    • 1...Qh4
      • 2.Rg8#
    • 1...Qh5
      • 2.Rg8#
    • 1...Qh6
      • 2.Rg8#
    • 1...Sa6
      • 2.Sd7#
    • 1...Sc6
      • 2.Sd7#
    • 1...Sd7
      • 2.Sxd7#
  • Keys
    • 1.Ke6!
      • 1...Qxg6+
        • 2.Sxg6#
      • 1...Kxg7
        • 2.Sd7#
      • 1...Qxg7
        • 2.Bc5#
      • 1...Bxg7
        • 2.Bc5#
      • 1...Qg8
        • 2.Rxg8#
      • 1...Qh1
        • 2.Rg8#
      • 1...Qh2
        • 2.Rg8#
      • 1...Qh3
        • 2.Rg8#
      • 1...Qh4
        • 2.Rg8#
      • 1...Qh5
        • 2.Rg8#
      • 1...Qh6
        • 2.Rg8#
      • 1...Sa6
        • 2.Sd7#
      • 1...Sc6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XR(G)::B(A)+S(C)
    • Q(a);CHECK,XP(E)::S(C),XQ(a)
    • Q(a);N_GUARD::R1(G),XQ(a)
    • Q(a);N_GUARD::R1(G)
    • Q(a);N_GUARD,P_PINS(C)::R1(G)
    • Q(a);N_GUARD,P_PINP(E)::R1(G)
    • S(b);N_GUARD::S(C)
    • S(b);N_GUARD::S(C),XS(b)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • Q(a);CHECK,XP(E)::S(C),XQ(a)
      • K(c);S_FLIGHT,XR(G)::B(A)+S(C)
      • Q(a);SBLOCK,XR(G)::B(A)
      • B(d);SBLOCK,XR(G)::B(A)
      • Q(a);N_GUARD,P_PINB(F)::R1(G),XQ(a)
      • Q(a);N_GUARD::R1(G)
      • Q(a);N_GUARD,P_PINS(B)::R1(G)
      • Q(a);N_GUARD,P_PINP(E)::R1(G)
      • S(b);N_GUARD::S(C)
      • S(b);N_GUARD::S(C),XS(b)
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